package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private SpuImagesService imagesService;

    @Autowired
    private AttrService attrService;

    @Autowired
    private ProductAttrValueService attrValueService;

    @Autowired
    private SkuInfoService skuInfoService;
    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private CouponFeignService couponFeignService;
    @Autowired
    private BrandService brandService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private WareFeignService wareFeignService;
    @Autowired
    private SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * //TODO 高级部分完善
     *
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(), images);

        //4、保存spu的规格参数;pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息；gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }

        //5、保存当前spu对应的所有sku信息；
        List<Skus> skus = vo.getSkus();
        if (CollectionUtils.isEmpty(skus)) {
            return;
        }

        skus.forEach(item -> {
            String defaultImg = "";
            for (Images image : item.getImages()) {
                if (image.getDefaultImg() == 1) {
                    defaultImg = image.getImgUrl();
                    break;
                }
            }
            //    private String skuName;
            //    private BigDecimal price;
            //    private String skuTitle;
            //    private String skuSubtitle;
            SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
            BeanUtils.copyProperties(item, skuInfoEntity);
            skuInfoEntity.setBrandId(infoEntity.getBrandId());
            skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
            skuInfoEntity.setSaleCount(0L);
            skuInfoEntity.setSpuId(infoEntity.getId());
            skuInfoEntity.setSkuDefaultImg(defaultImg);
            //5.1）、sku的基本信息；pms_sku_info
            skuInfoService.saveSkuInfo(skuInfoEntity);

            Long skuId = skuInfoEntity.getSkuId();

            List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                skuImagesEntity.setSkuId(skuId);
                skuImagesEntity.setImgUrl(img.getImgUrl());
                skuImagesEntity.setDefaultImg(img.getDefaultImg());
                return skuImagesEntity;
            }).filter(entity -> {
                //返回true就是需要，false就是剔除
                return !StringUtils.isEmpty(entity.getImgUrl());
            }).collect(Collectors.toList());
            //5.2）、sku的图片信息；pms_sku_image
            skuImagesService.saveBatch(imagesEntities);
            //TODO 没有图片路径的无需保存

            List<Attr> attr = item.getAttr();
            List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                BeanUtils.copyProperties(a, attrValueEntity);
                attrValueEntity.setSkuId(skuId);

                return attrValueEntity;
            }).collect(Collectors.toList());
            //5.3）、sku的销售属性信息：pms_sku_sale_attr_value
            skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

            // //5.4）、sku的优惠、满减等信息；gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
            SkuReductionTo skuReductionTo = new SkuReductionTo();
            BeanUtils.copyProperties(item, skuReductionTo);
            skuReductionTo.setSkuId(skuId);
            if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) > 0) {
                R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                if (r1.getCode() != 0) {
                    log.error("远程保存sku优惠信息失败");
                }
            }
        });

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        // status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            wrapper.eq("publish_status", status);
        }

        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        /**
         * status: 2
         * key:
         * brandId: 9
         * catelogId: 225
         */

        IPage<SpuInfoEntity> page = this.page(new Query<SpuInfoEntity>().getPage(params), wrapper);

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        // 1、查出当前spuid对应的所有sku信息，品牌的名字。
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // TODO 4、查询当前sku的所有可以被检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(ProductAttrValueEntity::getAttrId).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);
        Set<Long> searchAttrIdSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(attr -> searchAttrIdSet.contains(attr.getAttrId())).map(attr -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(attr, attrs);
            return attrs;
        }).collect(Collectors.toList());

        // TODO 1、发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = new HashMap<>();
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> listTypeReference = new TypeReference<List<SkuHasStockVo>>(){};
            stockMap = r.getData(listTypeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock));
        } catch (Exception e) {
            log.error("库存服务查询异常：{}", e);
        }

        // 2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            // skuPrice skuImg
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // hasStock hotScore
            // 设置库存信息
            if (CollectionUtils.isEmpty(finalStockMap)) {
                esModel.setHasStock(true);
            } else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            // TODO 2、热度评分。先暂时默认0
            esModel.setHotScore(0L);

            // TODO 3、查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandId(brand.getBrandId());

            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());

            // 设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        // TODO 5、将数据发送给es进行保存；gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            // 远程调用成功
            // TODO 6、修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());

        } else {
            // 远程调用失败
            // TODO 7、重复调用??接口幂等性；重试机制
            // Feign 调用流程
            /**
             * 1、构造请求数据，将对象转为json；
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求进行执行（执行成功会接吗相应数据）
             *      executeAndDecode(template);
             * 3、执行请求会有重试机制
             *      while(true) {
             *             try {
             *                 executeAndDecode(template);
             *             } catch (RetryableException var8) {
             *                  try {
             *                     retryer.continueOrPropagate(e);
             *                  }catch (){throw ex;}
             *                 continue;
             *             }
             *      }
             */

        }
    }

    /**
     * 根据skuId查询spu的信息
     * @param skuId
     * @return
     */
    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {

        //先查询sku表里的数据
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);

        //获得spuId
        Long spuId = skuInfoEntity.getSpuId();

        //再通过spuId查询spuInfo信息表里的数据
        SpuInfoEntity spuInfoEntity = this.baseMapper.selectById(spuId);

        //查询品牌表的数据获取品牌名
        BrandEntity brandEntity = brandService.getById(spuInfoEntity.getBrandId());
        spuInfoEntity.setBrandName(brandEntity.getName());

        return spuInfoEntity;
    }




//    /**
//     * TODO 目的：减少getSpuInfoBySkuId请求的io操作
//     *    目前实现有多次循环
//     * @param skuIds
//     * @return
//     */
//    public Map<Long, SpuInfoEntity> getSpuInfoBySkuIds(List<Long> skuIds) {
//        Map<Long, SpuInfoEntity>  skuToSpuInfoEntityMap = new HashMap<>();
//        //先查询sku表里的数据,获得spuId
//        Stream<SkuInfoEntity> stream = skuInfoService.listByIds(skuIds).stream();
//        Map<Long, Long> skuToSpuMap = stream.collect(Collectors.toMap(SkuInfoEntity::getSkuId, SkuInfoEntity::getSpuId));
//
//        List<Long> spuIds = stream.map(SkuInfoEntity::getSpuId).collect(Collectors.toList());
//
//        //再通过spuId查询spuInfo信息表里的数据
//        List<SpuInfoEntity> spuInfoEntitys = this.baseMapper.selectBatchIds(spuIds);
//        Map<Long, SpuInfoEntity> spuInfoEntityMap = spuInfoEntitys.stream().collect(Collectors.toMap(SpuInfoEntity::getId, entity -> entity));
//
//        List<Long> brandIds = spuInfoEntitys.stream().map(SpuInfoEntity::getBrandId).collect(Collectors.toList());
//        //查询品牌表的数据获取品牌名
//        Map<Long, String> brandMap = brandService.listByIds(brandIds).stream().collect(Collectors.toMap(BrandEntity::getBrandId, BrandEntity::getName));
//
//        for (Map.Entry<Long, Long> entry : skuToSpuMap.entrySet()) {
//            SpuInfoEntity spuInfoEntity = spuInfoEntityMap.get(entry.getValue());
//            spuInfoEntity.setBrandName(brandMap.get(spuInfoEntity.getBrandId()));
//            skuToSpuInfoEntityMap.put(entry.getKey(), spuInfoEntity);
//        }
//        return skuToSpuInfoEntityMap;
//    }


}